Circuit Breakers

Eaton BR thermal magnetic circuit breaker,Type BR 1-Inch plug-on circuit breaker,20 A,10 kAIC,Single-pole,120/240V,BR,#14-4 AWG Cu/Al,Q1,BR,Type BR loadcenters Molded Case Circuit Breakers
Mini circuit breaker, Homeline, 20A, 1 pole, 120/240VAC, 10kA AIR, standard type, plug in, UL Miniature Circuit Breakers
Multi 9 - C60BP - MCB - 1P - 20 A - C Curve - 277 V - 10 kA - UL 489 Low Voltage Circuit Breakers
Branch Circuit Breaker, GFCI 1-Pole 20A 120V, 10Ka Interrupt Rating GFCI Circuit Breakers
Showing 5041 - 5061 of 5061 Items
Filters Clear Filters
expand_less Brand (5)
+ Show 10 More
expand_less Ways to Shop
expand_less Circuit Breaker Type
+ Show 4 More
expand_less Voltage Rating (AC)
+ Show 5 More
expand_less Amperage Rating
+ Show 40 More
expand_less Mounting
expand_less Number of Poles
expand_less Interrupt Rating
+ Show 12 More
expand_less Trip Type
  • Appleton
  • Eaton
  • Milbank
  • O-Z/Gedney
  • Siemens
Discontinued
Hubbell Wiring Device - Kellems
BREAKER 15A 1P 120V 10K MP-GT GFCI 5MA
MFR: Hubbell Wiring Device-Kellems
MFR #: NPS1W
UPC: 040892007428
Item #: 1579769
In Stock -
$9.57 each
Availability
Location Available Qty
Discontinued
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 175A 3-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJ23B175
UPC: 783643193796
Item #: 151001
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Branch Main Breakers Non-reversible are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MD-T Voltage Rating 120/240 Amperage Rating 150 Interrupt Rating 10 Number Of Poles 2
MFR: Siemens
MFR #: MPD2150
UPC: 040892006421
Item #: 183025
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP, 2-Pole, 120/240VAC are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Application For Use In 125 AMP And 225 AMP Single Phase Output WMM, WML, WMT meter stacks Standard HACR Rated Voltage Rating 120/240 Amperage Rating 70 Interrupt Rating 10 Number Of Poles 2 Operating Temperature 40
MFR: Siemens
MFR #: MP270
UPC: 040892279801
Item #: 93186
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP, 2-Pole, 120/240VAC are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Application For Use In 125 AMP And 225 AMP Single Phase Output WMM, WML, WMT meter stacks Standard HACR Rated Voltage Rating 120/240 Amperage Rating 125 Interrupt Rating 10 Number Of Poles 2 Operating Temperature 40
MFR: Siemens
MFR #: MP2125
UPC: 040892281194
Item #: 3686
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Siemens
LOW VOLTAGE SENTRON MOLDED CASE CIRCUIT BREAKER ACCESSORY. COPPER BODY LUG FOR 2/3-POLE 1200A - 2000A PD AND RD FRAME BREAKER. WIRE RANGE 300 - 600KCMIL (CU/AL) - 5 BARREL LUG. SUITABLE FOR LINE AND LOAD SIDES. SUITS VL PG FRAME WHEN USING MOUNTING BASE (MBPG1600 OR MBPG1601). SINGLE LUG.
MFR: Siemens
MFR #: TC5R600
UPC: 783643244634
Item #: 448146
Available to Order
$2889.00 each
Availability
Location Available Qty
Discontinued
Siemens
Low Voltage Molded Case Circuit Breakers Sentron Molded Case Circuit Breakers - MCCB Connection Accessories are Circuit Protection Molded Case Circuit Breakers. BREAKER QJ AL/CU LUGS 1W 300KCMIL
MFR: Siemens
MFR #: TA1Q300
UPC: 783643122703
Item #: 46522
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 150A 2-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJ22B150
UPC: 783643193727
Item #: 102121
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 125A 3-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJ23B125
UPC: 783643193772
Item #: 146193
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Branch Main Breaker Reversible are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MD-T Voltage Rating 120/240 Amperage Rating 200 Interrupt Rating 22 Number Of Poles 2
MFR: Siemens
MFR #: MPD2200R
UPC: 040892006483
Item #: 21514
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 200A 3-POLE (22KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJH23B200
UPC: 783643193901
Item #: 61406
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP, 3-Pole, 240VAC are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Application For Use In 100 AMP, 3-Phase Output WML Meter Stacks Only Standard HACR Rated Voltage Rating 240 Amperage Rating 100 Interrupt Rating 10 Number Of Poles 3 Operating Temperature 40
MFR: Siemens
MFR #: MP3100
UPC: 040892237603
Item #: 371909
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Circuit Breakers GFCI - Personnel Protect 1-pole plug-on 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Replaced by US2 QF115A
MFR: Siemens
MFR #: QF115
UPC: 783643148574
Item #: 47653
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Siemens
LOW VOLTAGE SENTRON MOLDED CASE CIRCUIT BREAKER WITH SOLID STATE SENSITRIP III ELECTRONIC TRIP UNIT. ASSEMBLED STANDARD 40 DEG C BREAKER LD FRAME WITH FUSELESS CURRENT LIMITING BREAKING CAPACITY. 500A 3-POLE (100KAIC AT 600V) (150KAIC AT 480V). NON-INTERCHANGEABLE LIG TRIP UNIT. SPECIAL FEATURES NO LUGS INSTALLED. DIMENSIONS (W x H x D) IN 7.50 x 17.9 x 4.00.
MFR: Siemens
MFR #: SCLD69500G
UPC: 783643217652
Item #: 356802
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP 1-pole 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Standard HACR Rated Voltage Rating120 Amperage Rating 30 Interrupt Rating 10 Number Of Poles 1 Operating Temperature 40
MFR: Siemens
MFR #: MP130
UPC: 040892518917
Item #: 144757
Available to Order
$47.85 each
Availability
Location Available Qty
Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Circuit Breakers GFCI - Personnel Protect 1-pole plug-on 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. BREAKER 20A 1P 120V 10K QPF GFCI 5MAReplaced by QF120A
MFR: Siemens
MFR #: QF120
UPC: 783643148581
Item #: 48352
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Siemens
Motor Starter protector MSP, IEC, SIRIUS Component in Group Installation ManualCombination Starter Type E Self-protected Group Tap Conductor Protector Trip Class 10, 22 - 32 Amps Frame Size S2 Screw Terminals UL File E47705 in Vol. 7 (1) Sec. 7 (12)
MFR: Siemens
MFR #: 3RV1031-4EA10
UPC: 754554409351
Item #: 288123
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Branch Main Breakers Non-reversible are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MD-T Voltage Rating 120/240 Amperage Rating 175 Interrupt Rating 10 Number Of Poles 2
MFR: Siemens
MFR #: MPD2175
UPC: 040892006414
Item #: 1188737
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Type QPP/MPP Breakers are Circuit Protection Load Center Mains, Feeders, and Miniature CircuitBreakers. Type MPP Voltage Rating 120/240 Amperage Rating 200 Interrupt Rating 10 Number Of Poles 4
MFR: Siemens
MFR #: MPP2200
UPC: 040892528664
Item #: 1206633
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Appleton
Ground Indicator; 3/4 Inch NPT, 250 Volt AC
MFR: Appleton Electric
MFR #: AEPGI50
UPC: 781381923996
Item #: 64597
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty
Discontinued
Eaton
Eaton Crouse-Hinds series EIB circuit breaker, 15A, EG frame type, Bolted/ground joint cover construction, Copper-free aluminum, Cutler-Hammer breaker, Three-pole, 600 Vac
MFR: Eaton Crouse-Hinds
MFR #: EIBA3015
UPC: 662276054479
Item #: 620940
Available to Order
Phone: 1-855-999-2372 Email Contact Us
Availability
Location Available Qty

About Circuit Breakers

Circuit breakers are a critical component of electrical systems, protecting them against overload or short-circuiting. These devices shut off power when levels exceed a safety threshold in order to prevent damage to equipment or personnel. There are a variety of types of circuit breakers to suit different applications, including miniature, molded case, low voltage, GFCI, and AFCI.